Short- and long-term measurements of resonance frequencies on prestressed concrete beams
(2011) XXI Nordic Concrete Research Symposia, 2011 43(1).- Abstract
- Currently, no method exists for determining the prestress forces in prestressed concrete structures. According to the theory of acoustoelasticity, the modulus of elasticity of concrete is stress dependent, which means that the resonance frequency of a concrete structure also is stress dependent. In this study, both short-term and long-term measurements of the resonance frequencies of four prestressed concrete beams were performed. The results show that the acoustoelastic effect in concrete is measureable and that the resonance frequencies increase with the applied compressive stress and that the prestress losses can be monitored through measurements of the resonance frequencies.
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/1988309
- author
- Lundqvist, Peter LU and Rydén, Nils LU
- organization
- publishing date
- 2011
- type
- Chapter in Book/Report/Conference proceeding
- publication status
- published
- subject
- keywords
- KstrConcrete
- host publication
- Nordic Concrete Research
- volume
- 43
- issue
- 1
- publisher
- The Nordic Concrete Federation
- conference name
- XXI Nordic Concrete Research Symposia, 2011
- conference location
- Hämeenlinna, Finland
- conference dates
- 2011-05-30 - 2011-06-01
- ISSN
- 0800-6377
- ISBN
- 978-82-8208-025-5
- language
- English
- LU publication?
- yes
- id
- 072a1042-cb35-4b7e-afcd-69dca8db93c1 (old id 1988309)
- date added to LUP
- 2016-04-01 14:08:37
- date last changed
- 2018-12-11 13:45:28
@inproceedings{072a1042-cb35-4b7e-afcd-69dca8db93c1, abstract = {{Currently, no method exists for determining the prestress forces in prestressed concrete structures. According to the theory of acoustoelasticity, the modulus of elasticity of concrete is stress dependent, which means that the resonance frequency of a concrete structure also is stress dependent. In this study, both short-term and long-term measurements of the resonance frequencies of four prestressed concrete beams were performed. The results show that the acoustoelastic effect in concrete is measureable and that the resonance frequencies increase with the applied compressive stress and that the prestress losses can be monitored through measurements of the resonance frequencies.}}, author = {{Lundqvist, Peter and Rydén, Nils}}, booktitle = {{Nordic Concrete Research}}, isbn = {{978-82-8208-025-5}}, issn = {{0800-6377}}, keywords = {{KstrConcrete}}, language = {{eng}}, number = {{1}}, publisher = {{The Nordic Concrete Federation}}, title = {{Short- and long-term measurements of resonance frequencies on prestressed concrete beams}}, volume = {{43}}, year = {{2011}}, }